How to reset footnote counter in each column of a two-column document?

Question

Footnote counters can be reset in each page by using either zref-perpage or perpage packages but how do you reset footnote counter in each column of a two column documents?

\documentclass[twocolumn]{article}
\usepackage{zref-perpage}
\zmakeperpage{footnote}
\begin{document}
This is a test\footnote{Test}
\newpage
This is a test\footnote{Test}
\end{document}

Answer 1

I have a solution that works in combination with

• footmisc and its perpage option,
• zref-perpage and \zmakeperpage{footnote}, or
• perpage and \MakePerPage{footnote}.

With the help of etoolbox's \preto each time \footnote is called it is checked wether it is used in the first or second column. If it is in the second column the footnote counter is reset if it hasn't been reset before. For this a new conditional is used that is set to true after the resetting and set to false again in the first column.

Although this worked nicely in my tests it might have drawbacks I'm not aware of.

\documentclass[twocolumn]{article}
\usepackage[perpage]{footmisc}
% or
% \usepackage{zref-perpage}
% \zmakeperpage{footnote}
% or
% \usepackage{perpage}
% \MakePerPage{footnote}

\usepackage{lipsum}% dummy text
\usepackage{etoolbox}
\makeatletter
\newif\iffootnoteresetted
\preto\footnote{%
  \if@firstcolumn
    \footnoteresettedfalse
  \else
    \iffootnoteresetted\else
      \setcounter{\@mpfn}{0}%
      \footnoteresettedtrue
    \fi
  \fi
  }{}{}
\makeatother
\begin{document}
This is a test\footnote{Test}
This is a test\footnote{Test}
\lipsum[1-4]
This is a test\footnote{Test}
This is a test\footnote{Test}
\lipsum[1-4]
This is a test\footnote{Test}
This is a test\footnote{Test}
\newpage
This is a test\footnote{Test}
This is a test\footnote{Test}
\end{document}

Answer 2

footnote counter needs to be reset at the beginning of \@makecol macro:

\documentclass[twocolumn]{article}
\usepackage{lipsum}
\makeatletter
\let\@ORG@makecol\@makecol
\gdef\@makecol{\setcounter{footnote}{0}\@ORG@makecol}
\makeatother

\begin{document}
This is a test\footnote{Test}
This is a test\footnote{Test}
\lipsum[1-4]
This is a test\footnote{Test}
This is a test\footnote{Test}
\lipsum[1-4]
This is a test\footnote{Test}
This is a test\footnote{Test}
\newpage
This is a test\footnote{Test}
This is a test\footnote{Test}
\end{document}

Answer 3

To show the drawback I speak about, it's too long for a comment.

\documentclass[a4paper,twocolumn]{article}
\usepackage{lipsum}
\makeatletter
\let\@ORG@makecol\@makecol
\gdef\@makecol{\setcounter{footnote}{0}\@ORG@makecol}
\makeatother

\begin{document}

\def\TEST{
This is a test. \footnote{Begin}
This is a test. This is a test. This is a test. This is a test. This is a test. This is a test. \footnote{End} This is a test.\par
}

\TEST\TEST\TEST\TEST\TEST\TEST\TEST\TEST
\TEST\TEST\TEST\TEST\TEST\TEST\TEST\TEST

\end{document}